Fox won the night with adults 18-49 as MasterChef rose more than 20% from last week with adults 18-49. Led by America's Got Talent, NBC had the most viewers for the night but in the 9pm hour MasterChef was nipping at Talent's tail with adults 18-49.

The CW premieres of America's Next Top Modeland Hellcats were something of a mixed bag, but more mixed to the bad. America's Next Top Modelwas down 13% with adults 18-49 vs. last year's premiere to a 1.3 rating, its lowest rated premiere ever. But that seems in the range of the normal erosion of ratings with broadcast network shows we're used to seeing.

With CW's target demo of women 18-34 ANTM pulled a 2.0 rating, third for the hour and well behind both Big Brother (2.8) and MasterChef (2.7). Update: see Bill's notes in the comments, if you compare to last year's 8pm hour for ANTM (last year it had a two hour premiere) the drop with women 18-34 was over 20%.

The good news for the CW is that Hellcatswas 100% improved versus last year's The Beautiful Life. But it was down 8% from the Melrose Place premiere last year with adults 18-49. CW doesn't worry about its 1.2 rating with adults 18-49 and is more focused on its rating with women 18-34 where it got a 2.0 rating -- third for the hour behind MasterChef (3.1) and America's Got Talent (2.2).

CW notes that it was the best "Non-Top Model" performance at 9pm in three years (9/19/07 when Gossip Girlpremiered) and Hellcatsdid improve by the half hour by 15% in adults 18-34, 5% in women 18-34, 8% in adults 18-49, 6% in women 18-49, 14% in persons 12-34 and 9% in females 12-34.

"The Tonight Show with Jay Leno" (2.8/7 in metered-market households) out-delivered CBS's "Late Show with David Letterman" (2.4/6) and ABC's combination of "Nightline (2.8/7) and "Jimmy Kimmel Live" (1.3/4) in Nielsen's 56 metered markets.

At 12:35 a.m., "Late Night with Jimmy Fallon" (1.3/5 in metered-market households) beat CBS's "Late Late Show with Craig Ferguson" (1.2/5). In the 25 markets with Local People Meters, "Late Night" (0.5/3 in 18-49) topped "Late Late Show" (0.3/2).

At 1:35 a.m., Last Call with Carson Daly" averaged a 0.8/4 in metered-market households with an encore and a 0.3/3 in adults 18-49 in the 25 markets with local people meters.

Fast Affiliate Ratings: These first national ratings, including demographics, are available at approximately 11 AM (ET) the day after telecast, and are released to subscribing customers daily. These data, from the National People Meter sample, are strictly time-period information, based on the normal broadcast network feed, and include all programming on the affiliated stations, sometimes including network programming, sometimes not. The figures may include stations that did not air the entire network feed, as well as local news breaks or cutaways for local coverage or other programming. Fast Affiliate ratings are not as useful for live programs and are likely to differ significantly from the final results, because the data reflect normal broadcast feed patterns. For example, with a World Series game, Fast Affiliate Ratings would include whatever aired from 8-11PM on affiliates in the Pacific Time Zone, following the live football game, but not game coverage that begins at 5PM PT. The same would be true of Presidential debates as well as live award shows and breaking news reports.

Rating: Estimated percentage of the universe of TV households (or other specified group) tuned to a program in the average minute. Ratings are expressed as a percent.

Share (of Audience): The percent of households (or persons) using television who are tuned to a specific program, station or network in a specific area at a specific time. (See also, Rating, which represents tuning or viewing as a percent of the entire population being measured.)

Time Shifted Viewing – Program ratings for national sources are produced in three streams of data – Live, Live+Same Day (Live+SD) and Live+7 Day. Time shifted figures account for incremental viewing that takes place with DVRs which are currently in approximately 24.4% of all U.S. TV households. Live+Same Day (Live+SD) include viewing during the same broadcast day as the original telecast, with a cut-off of 3:00AM local time when meters transmit daily viewing to Nielsen for processing. Live+7 Day ratings include incremental viewing that takes place during the 7 days following a telecast.